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Subject: Re: [OMPI users] ifort and gfortran module
From: Jeff Squyres (jsquyres_at_[hidden])
Date: 2009-07-22 13:34:28

On Jul 20, 2009, at 9:09 AM, Dave Love wrote:

> > you should compile openmpi with each pf intel and gfortran seperatly
> > and install each of them in a separate location, and use mpi-
> selector
> > to select one.
> What, precisely, requires that, at least if you can recompile the MPI
> program with appropriate options? (Presumably it's features of the
> Fortran/C interfacing and/or Fortran runtime, but the former may be
> influenced by compilation options, and I'd hope the glue didn't
> require
> the compiler runtime -- the Intel compiler is on the list to check.)


> It's obviously of interest to those of us facing combinatorial
> explosion
> of libraries we're expected to install.

Indeed. In OMPI, we tried to make this as simple as possible. But
unless you use specific compiler options to hide their differences, it
isn't possible and is beyond our purview to fix. :-( (similar
situation with the C++ bindings)

> Also, is there any reason to use mpi-selector rather than switcher?

Nope -- they do about the same thing.

Jeff Squyres